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Stack 7 Fact Fam+-
Stack 7 Fact Fam +-
Question | Answer |
---|---|
7+7 | 7+7=14 |
14-7 | 14-7=7 |
7+8 | 7+8=15 |
8+7 | 8+7=15 |
15-7 | 15-7=8 |
15-8 | 15-8=7 |
7+9 | 7+9=16 |
9+7 | 9+7=16 |
16-7 | 16-7=9 |
16-9 | 16-9=7 |
7+10 | 7+10=17 |
10+7 | 10+7=17 |
17-7 | 17-7=10 |
17-10 | 17-10=7 |
7+11 | 7+11=18 |
11+7 | 11+7=18 |
18-7 | 18-7=11 |
18-11 | 18-11=7 |
7+12 | 7+12=19 |
12+7 | 12+7=19 |
19-7 | 19-7=12 |
19-12 | 19-12=7 |